Carton and liner forming machine



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G. H. BENT CARTON AND LINER FORMING MACHINE Filed Sent. 26. 1921 15 Sheets-Sheet 8 .Fano 8 1924. 1,4-843 G. H. BENT CARTON AND LINERA FORMING MACHINE Filed sept. 26. 1921 15 sheets-sneu 9 ro c/uvrmv FEED ,paus

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G. H. BENT CARTON AND LINER FORMING MACHINE i Filed SeDl'.. 26. 1921 l5 Sheets-Sheet 10 G. H. BENT CARTON AND LINER FORMING MACHINE Jan. s 1924,

.Filed sept. 2e. 19121l 15 sheets-sheet 11 .INVENTOR Jan, s, 1924. 4,480,143

G. H. BENT CARTON AND LINER FORMING MACHINE s led sept. 2e. 1921 issneets-sheet 12 Jam 8 1924:.7

v G. H. BENT CARTON AND LINERFORMING MACHINE Filed Sept. 26. 1921 15 Sheets-Sheet 13 G. H. BENT CARTON AND LI'NER FORMING MACHINE Filed SeD. 26. 1921 l5 Sheets-Sheet 14 Jam. s, 1924., 1,480,143 l G. H. BENT CARTON AND LINER FORMING MACHINE Filed Sept. 26 1921 15 Sheets-Sheet 15 A ZIJ fff ATTORNEYS Patented Jan. 8, 1924.

UNITED/ STATS PATENT OFFICE.

GEORGE H. BENT, OF BATTLE CREEK, MICHIGAN.

' CARTON AND LINER FoRMINGMAoHINn Application led September 26, 1921. Serial No. 503,194.

To all whom t may concern.'

Be it known that I, GEORGE H. BENT, a citizen of the United States of America, and

a resident of Battle Creek, Michigan, havey automatically forming liners for cartons on a continuously moving form which may be used in combination with the carton-forming mechanism or separately, as may be desired.

One of the objects of the invention is to provide improved means (either with or without the liner-forming mechanism) for automatically wrapping a carton blank about a continuously moving form in such f manner and by such means that the sidev panels of the blank will be sharply bent with respect to the front panel, and the two marginal panels sharply bent with respect to the side panels, thus responding to the exacting requirements of the art for perfect `and sightly cartons.

In the preferred embodiment of the inventive idea, this is eected by mechanism l that folds and yieldingly holds the side panels of the blank against the form, and oppositely operating folding members that engage the lateral marginal panels of the blank and fold the same into engagement with the rear face of the form. y These folding members in said embodiment have a lateral and forward movement and are yielding in the line of movement of the form, and engage the marginal panels adjacent their junction with the side panels, so that the said marginal panels are sharply bent or folded against the rear face of the form. Adhesive is applied to one of these marginal panels as it is fed into the path of movement of the form, and this panel is first folded against the rear face of the form. 'I`hereafter, the other marginal panel is folded into engagement with said glued panel. said marginal panels against each other and the rear face of the form, and holding them Means are provided for clamping so clamped until they are firmly secured together. In addition, I prefer to form a vertical channel or groove in the rear face of each'form adjacent the line of engagement of the glued panel with the other marginal panel so that, if any adhesive is squeezed out,- it will enter said channel or groove and notfadhere to the smooth rear face of the form.

The invention further resides in means for forming on each of a series of continuously moving forms a carton liner and a superposed carton by first wrapping a liner about a continuously moving former, then sealing the bottom lof said liner, then wrapping the carton about said liner, sealing the marginal panels against the rear faceof the form, and thensealing the bottom of said carton. Thereafter, if desired, the lined carton may be filled with any desired material and the other ,end or top sealed by any desired means. In this aspect, the-invention more particularly resides in a con tinuous source of paper supply with means for continuously severing appropriate lengths for each liner which is wrapped about the moving form, in combination with a source of carton blanks from which successive carton blanksare fed and formed about said liners, whereby lined cartons are lcontinuously and expeditiously formed with a large saving in cost of production and all the economicsl that flow from automatic and continuous operations as opposed to ,manual and intermittent operations as heretofore employed. The feed of the liner sheets and the carton blanks are synchronized to the travel of the continuously moving formers about which they are to be wrapped.

In addition to providing means for continuously forming lined cartons on a series of continuously moving forms, means arel provided for insuring that only one carton blank at a time shall be fed from the hopper containing the blanks, and also means that automatically and periodically move forward against the rear of the carton being withdrawn so that, should a second blankstart down, said means will support the same and prevent its downward movement until the first blank has been Wrapped about its former. Also that, should a lined carton not be removed'from a form as the latter approaches the point m medina where a carton blank is normally 'fed to l the same, the feed of said blank will be automatically prevented.

lin addition, the invention in one aspect resides in providing rotary means for bending one marginal panel of the carton blank to which glue is to be applied, to eliminate friction and to prevent any retardation of movement of that edge of the carton blank as the latter is feddownward to the form. Further, the invention resides in means for exactly registering or positioning the carton blank in the path of the-continuously moving former.

'llhe invention' will be better understood by reference to the accompanying drawings, illustratin one expression of the inventive idea, an wherein- Fig. 1 is a side elevation of the improved machine;

Fig. 2 is a vertical cross-section on the line 2-2 of Fig. 1

Figs. 3 and 3a are a horizontal plan view, partly in section;

Fig. 4 is a perspective- View showin part of thefeed for the. liner. paper, and associated mechanism;

Fig. 5 is a detail showing particularly the mounting of the carton detector mecha- Fig. 6 is a side elevation showing particularly the mounting and operation of the blank folder;

Fig. 7 is a plan View at the point where the carton blank is fed in front of the moving form;

rFig. 8 is a perspective view showing the carton detector mechanism, and a blank in position to be engaged by a form;

Fig. 9 is a perspective View of the hopper and associated mechanism;

Fig. 10 is a perspective detail showing the rollers for bending one of the marginal panels of the blank;

`Fig. 11 is a detail showing the means for preventing more than a single blankvat one time from being fed into the path of the moving form;

Fig. 12 illustrates a well-known form of carton blank;

Fig. 13 is a detail perspective showing v the cam-shaft on which are mounted the cams 'for folding the marginal panels of the liner around the rear face of the` form, the cam-for registering device for the carton blank, and the cam' for folding one of the marginal panels of the carton blank;

Fig. 14 is a detail perspective showing the folding members for the marginal panels of the liner;

Fig.- 15 is a plan view of the machine with va preferred form of folding members for th? marginal panels of the blank;

Figli@ is a perspective View of one of said .folding members;

Fig. 17 is an elevation corresponding to,

Fig. 17a is a perspective View of the folder.

member for the marginal panel of the carton blank that is folded into engagement with the glued panel; and Fig. 17'J is a similar view of a different embodiment;

Fig. 18 is a detail of the folding rollers for the glued marginal panel of the carton blank;

Fig.19 is a perspective view of a carton form provided with a vertical channel on its rear face, and with its top so formed that the end nfiaps of the `liner may be readily sealed thereagainst;

Fig. 20 is a section in elevation lcorresponding to Fig. 19;

Fig. 21 is a perspectiveview showing a modified construction of carton form;

Fig. 22 is a sectional view corresponding to Fig. 21;

Figs. 23 and 24 are plan views of further modifications of the forms. v

Referring to said. drawings, wherein like reference numerals indica-te like parts, 10 is t-he usual continuously driven conveyor passing around sprockets 11 and 12 on shafts 11 and 12', respectively, mounted as desired in the machineframe, and carrying a plurality of suitably spaced forms 13 to which the liners and carton blanks are fed and about whichthey are wrapped and from which the lined cartons are removed in any suitable or usual manner. An airblast through said forms, as disclosed in Johnson Patent No. 1,052,667 dated Feb. 11, 1913, may, if desired, be employed.

A roll 14 of liner paper is supported `in any suitable manner. the proper length for each separate liner being cut oft' by any suitable severing means and fed downward between belts 16 and plates 17. Said belts pass around pulleys on shaft 16 (Fig. 4) which latter is suitably driven, as from shaft 11 by belts 16 (Fig. y4).' The liner is fed past a gluing wheel 18, associated with a glue box 18 which applies a thin film of glue to the edge of the liner, and then in front of one of the continuously moving forms 13 which passes between a pair of vertically disposed rollers 19 and 19 (Fig. 3a) and spring-pressed guide rails 108`and 109, said rollers :rnd rails being suitably mounted in the machine fram'e. Thus the side por- 'tions of the liner are folded against the form. Thereupon folder member 20 (Fig. 3) operates to fold'the glued flap against the form and immediately thereafter folder member 21 acts on. the'other end Hap to press it against said glued flap. Illhe construction and operation of said folder members are preferably the `same as the folder member for the carton blank hereinafter described. Preferably, folder 20 vis carried by a lever 20 pivoted at 20 to the machine i the lue mechanism 25. The top flap folder 23 rst operates, then the glue is applied, this being immediately followed by the operation of the top flap folder 24; whereu n the liner, sealed along a rear longitudinal .line and with bottom closed, approaches the carton blank resting on supports 26 and 27 (Figs. 1 and 8), carried by the machine frame, where it has been deposited by the blank feed mechanism after being withdrawn from the hopper 28.

In Fig. 12 is illustrated one form of blank for a well-known carton, 29 indicatin panel that is engaged by the front o the form 30, and 31 the panels that are pressed back against the sides of the form, 32 the panel to which glue is applied, and 33 the panel that is secured to the glued flap 32.

The hopper 28 and the means for feeding the blanks in front of the forms to which liners have been applied will now be described.

As illustrated, in Figs. 1 and 9, a large number of blanks arranged on edge are supported b-y the base 34 of the hopper. rlhis arrangement simplifies and renders easier the feed of the foremost blank and enables the supply of blanks in the hopper to be replenished without stopping the machine. The supply of blanks in the hopper is constantly fed forward by a follower 35 carried by a plurality of chains 36 passing over sprockets mounted on shafts 38, which latter are bevel-geared to shaft 39, and a bottom chain 38 passing around a sprocket 39 on shaft 39 (Fig. 9). On the latter shaft is mounted a ratchet 40 which is rotated to revolve said shaft by means of a pawl 41 carried by a pivoted arm 41', periodically operated through link 42 into feeding engagement with said ratchet by a cam 42 mounted on shaft 43. Fingers 44 carried by shaft 45, suitably mounted in the` machine frame, press against the front of the Supply of blanks and, if undue feeding pressure is exerted against the pile, said fingers are moved, thereby rotating shaft 45 and, through connections 46, elevating said pawl 41 out of engagement with its ratchet.

The downward movement of the foremost blank of the supply is effected by the feed wheels 47 mounted on shaft 43 provided in their peripheries with rubber inserts 48, said wheels cooperating with rubber-faced blocks the 49 mounted on rod 50. This mechanism may be, and preferably is, the same as that shown in Johnson Patent No. 1,096,918 dated May 19, 1914, and need not be further described.

As the foremost blankis fed downward, a plurality of curved supporting fingers 51 (Fig. 11) each carried by a sleeve 51 on said rod 50, are swung forward into engagelhent with the rear of said blank, and are thus in position to catch a second blank if it should be withdrawn from the hopper with the first. Said supporting fingers are preferably-operated by an adjustable twopart cam 52 on shaft 43 operating through link 53 to rock on arm 54 pivoted at 55 to the frame. Links 56 extendl forward from one `end of said arm, each being connected to the lower end of an arm projecting downward from its associated sleeveY 51. Spring 57, one end of which is connected to a link 56 and the other anchored to the frame, normally holds said fingers in their rearward position.

As the blank is fed downward, the flap 32 may be engaged by means for bending the same forward so that, first, the glue may be readilyapplied thereto and, second so thatv the panel 33 may be readily turned down thereon. It is quitedesirable,'not to say necessary, that the operation of the bending means should not retard the movement of that edge of the blank and hence there is provided a channelled or grooved roller 60 (Fig. 10) mounted on a pin 61 carried by a bracket 61 secured to the frame of the machine, the groove ofn which is preferably V-shaped in cross-section. With this roller there cooperates a roller 62 which engages in said groove. This roller 62 is mounted on a shaft 63 and is driven from shaft 64 through sprockets 65 and 66 and sprocket chain 67. The flap 32 passes between said rollers, being pressed into said groove and bent at an angle to the main body of the blank.

Thereupon the blank is fed between two sets of rubber-covered rollers and 71, thel former being mounted on shaft 73 and the latter on shaft 64. Shaft ,64 is driven from shaft 73, a gear 64 on the former meshing with a gear 73 on the latter. Shaftv 73 is driven from shaft 74 (Figs. 1 and 10) througho chain 75. These shafts are rotated at high speed to accelerate the downward feed of the blank. When it is considered that the machine is run normally at the rate of 60 cartons per minute, it will be appreciated that this acceleration in the downward feed of the blanks is quite desirable in order that a blank may be properly positioned in front of each rapidly moving form. Shafts 64 and 73 are geared together and are driven from shaft 74 (as stated) through a sprocket chain 75 passing around sprockets 64 and 74 on shafts 73 and 74, respectively. A 'pinion 76 carried by shaft 74 meshes with agear'77 carried by shaft 78. There is preferably a 2 to 1 ratio between sprockets 64' and 74', and preferably a 5 to 1 ratio between gear 77 land'pinion 76, hence the accelerated s eed of rotation of the rollers 70 and 71. hatt 7 8 is driven from shaft 12' by chain -79 and heft 43 is driven from shaft 78 by chain As the blank is fed downwardly, the panel 32 engages a glue roll 80 (Fig. 1)1 so that a thin film of adhesive is applied t creto, and the blank is then deposited on supports 26 and 27 (Figs. 1, 3 and 8) arranged on either .front of the approaching form. This aliner is operated by a cam 85, mounted on shaft '97', through-bell-crank'lever 87 pivoted at 87' to a bracket 84', and link 87 As the front of the liner-covered form en' gages the panel 29 of the positioned blank, it forces said blank between two verticallydisposed rolls 90 and 91 (Figs. 3, 6, 7 and 15) which may yield laterally by reason of.

the provision of springs 92, and thus forces panels 30 and 31 backward against the sides of the form. The bent glued panel 32 is by the same means moved behind the form sov that it is only necessary to fold the panel 33 thereon. This may be eiected by a folder member pivoted at 95, which folder member consists of a vertically disposed roller or strip 96 carried by a sharply bentarm 96. The roller or strip isv moved quickly in- Iwardly across the path of the form just as the. latter passes, and thus wipes or folds the panel 33 downwardly onto the glued flap 32, and is at once withdrawn. Said roller or strip is o erated by a cam 97 (Figs. 6

veo

and13) on s aft 97' through arm 95', link 98, and arm- 99 ivoted at 99' to the machine frame. Said shaft 97 is driven from shaft 12' (Figs. 1, 3, 6 and 13) through 'sprocket chainv 97 passing over sprockets 12" and 97 on shafts 12' and 97', respectively. A spring 99"- connected at one end to the pivoted arm 99 and anchored at its other end to the machine frame tends to force saidroller `96 into engagement with the panel 33 olf the blank. The cam 97 acts ,to remove said roller.

j Medias 'A As soon the panel 33 has been'moved into Contact with the .glued panel 32, a@

`holds it clamped against the form until the carton is to be removed. The carton is thus securely glued and held until the adhesive hasset. The clamp upright 101`being pivoted at 102 with a slight play. The upright is carried by an arm 103 pivoted at 104 to an abutment 105 mounted on the block 13 that carries the form 13. A spring 106, one end of which is secured to the arm 103 and the other anchored to the block 13', normally holds the clamp. against the carton. The clamp is released to permit removal vof the carton, and the folding of a blank about a form, by a stationary cam rai-l 107. The spring 106 acts to e'ect the clamping as soon as panel 33 is folded onto panel 32, at which point the cam rail ends; and the release is eec'ted when'the roller 103' mounted onthe free end of the arm 103 engages Said cam rail 107 when the cartons are delivered ontothe oH-bearing conveyor 107' (Fig. 1). Tn-

stead of .such a spring-actuated clamp, T.

may employ a rubber-faced clamp operated by afcam-actuated toggle, said toggle being cam controlled both in itsv opening and closing. s

After the blanks pass the vertically disposed rollers and 91, the panels 30 and k3.1 of the blanks are engaged by springpressed guide rails`108' and 109' suitably mounted on brackets 108" and 109", two rails being preferably disposed on each side of the pat-h of the moving form. These rails hold the panels of the blank closely against the form so that all chance of displacement is avoided.

After the blank has been wrapped around the form and clamped by the device 100, the

front and rear top iiaps are closed by the usualflap closers 110 and 111, the latter acting also to spread the side top-aps which then pass under the glue rolls 112 and are finally closed by any suitable or usual flap closers 113 (see bottom of Fig. 1). Any

suitable devices for these purposes, such asunder these conditions. As illustrated (see- Figs. 5, 6 and 8), each form is rovided with a groove 115 a ong Aone side t rough which 100 is mounted on an a feeler 116 normally passes, This feeler is pivoted onupright 117 and, if said finger is moved outwardly by the presence of a carton on the form, a second upright pivoted member 118 will be rotated through arm 119 and link 120, thus moving a stop 120 into the path of a pivoted finger 121 carried by one member of a clutch 122 on shaft 78, so that said clutch will be opened when the finger 121 is rocked by engagement with said stop 120', and all the carton feed wheels associated with the hopper, which are driven from shaft 78, will be stopped in their rotation, thus preventing the feeding of the blank,

The paper-feed mechanism may be driven in any suitable manner so long as the feed v,of the paper is accurately timed with respect to the travel of the continuously moving forms 13. As clearly illustrated in Figs. 1, 3":l and 4, the paper web 123 passes from the roll 14 around rollers 124 and 125,' suitably mounted in a bracket 126, and thence downwardly between rolls 127 and 128 also suitably mounted in bracket 126. Below these two rollers is mounted the paper severing mechanism, preferably in the form of a pair of rolls129 and 130, the latter carrying the knife 131 that severs the paper. Theffour rolls last mentioned are geared together and are driven from shaft 11 by means of a sprocket chain 132 passing around a sprocket on shaft 133,on which latter the severing roll 130" is mounted. A gear on lshaft 133 meshes With a gear on shaft 134 on which roll 1529 is mounted. Shaft 135 on which roll 128 is mounted is driven from shaft 133 through a movable gear 136. The latter is preferably mounted on an arm 137 pivoted at 138 (Fig. 4) so that it may be moved into and out of engagement with the gears on shafts 133 and 135. The gear on shaft 133 is shown at 139 and the gear on shaft 135 is numbered 140. The rollv 127 is mounted on a shaft 141 that carriesva gear 142 meshing with gear 140 on shaft 135.

It will be understood that any desired length of paper may be automatically sev.- ered by changing the size ofthe gears and rolls employed.

The driving connections of the machine are so devised as to provide the most accurate timing of the various parts in order to insure the delivery of the severed liner sheets and the carton blanks in front of the'continuously moving forms at the precise moment that `they are needed. This is of great importance in view ofthe fact that the machine is a continuously operating onel and isl devised to wrap the liners or carton blanks or both about 'the continuously moving forms at the rate of approximately 60 per minute. It is therefore pointed out that the devices for feeding -the cartonsfrom the hopper in frontvof the moving form are driven from the shaft 12r about which the main conveyor 10 passes, and that the paperv feed mechanism is driven lfrom the shaft 11 about which the main conveyor also passes, The operation of theicarton feed and the paper feed is thus coordinated and synchronized with the movement of the forms carried by the main vconveyor 10.

Referring to Fig. 1, it is pointed out that 143 is the motor shaft which drives counter shaft 144 through belt 145. A belt 146 passes around apulley on sha-ft 144 and also around a pulley 147 on shaft 148. From shaft 148 the power is transmitted to the shaft 12 through sprocket chain 149. Shaft 97 is driven from shaft .12 through sprocket chain 97 shaft 78 is driven from shaft 12 through -sprocket chain 79; shaft 43 is driven from shaft 78 through sprocket chain 78; and shaft 133 of the paper-feed mechanism is driven from shaft 11 through sprocket chain 132.

In Figs. 15 to 18 is shown a preferred form of folding mechanism for bending and .closing the panels 32 and 33 against the roar face 0f the' form. When this construc- 'a -carrier 151 pivoted at 152 to a slide 153.

Said slide is mounted on and movable with a carriage 154 slidable longitudinally of the machine on rods 155. In'addition, said slide is movable transversely of said carriage across the ear of the form., The movements of the carriage and slide are effected by a stationary cam mounted on a bracket 156 carried by the machine frame.

Said cam has a groove 157 into which pro-v jects a pin 15,8 fixedly secured to the under face of slide 153. Said pin also passes through an elongated slot 159 in arm 16() keyed on an upright shaft 161 eccentrically mounted with respect to cam groove 157. This shaft carries a bevelgear meshing with a bevel gear 162 carried by a shaft 163 which latter also carries a bevel gear 165 that meshes with la bevel gear 164 on shaft 12 from which said folders are accordingly driven.

Through these connections said folder will engage theglued flap. 32 preferably at its junction with the side panel 31, bend it sharply around the form and travel with it an appreciable distance.

In order to secure a .sharp bend of thel panel, the folder is pressed 'by spring 166 so 

